We report the detection of type C QPO along with the upper harmonic in the commensurate ratio of 1:2 in the two observations of the low-mass black hole transient H 1743–322 jointly observed by XMM-Newton and NuSTAR during the 2016 outburst .
We find that the QPO and the upper harmonic exhibit shifts in their centroid frequencies in the second observation with respect to the first one .
The hardness intensity diagram implies that in contrast to 2008 and 2014 failed outbursts , 2016 outburst was a successful one .
We also detect the presence of a broad iron K \alpha line at \sim 6.5 keV and reflection hump in the energy range of 15–30 keV in both the observations .
Along with the shape of the power density spectra , the nature of the characteristic frequencies and the fractional rms amplitude of the timing features imply that the source stayed in the low/hard state during these observations .
Moreover , photon index and other spectral parameters also indicate the low/hard state behavior of the source .
Unlike the soft lag detected in this source during the 2008 and 2014 failed outbursts , we observe hard time-lag of 0.40 \pm 0.15 and 0.32 \pm 0.07 s in the 0.07–0.4 Hz frequency range in the two observations during the 2016 outburst .
The correlation between the photon index and the centroid frequency of the QPO is consistent with the previous results .
Furthermore , the high value of the Comptonized fraction and the weak thermal component indicate that the QPO is being modulated by the Comptonization process .